Leonardo DiCaprio's Appian Way production company is developing Robin Hood: Origins, which was written by Joby Harold (Knights of the Round Table). Deadline describes the project as, "a gritty version of the rogue do-gooder Robin Hood." The project isn't set up at a studio quite yet, but there are also two separate competing Robin Hood movies in development at other studios.
Disney is developing Nottingham & Hood, written by Brandon Barker, which is described as a revisionist take on the Robin Hood legend. The project is said to have the same tone as the studio's Pirates of the Caribbean franchise, which the studio intends to spawn a franchise from. Sony Pictures also acquired a Robin Hood pitch in October from writers Cory Goodman (The Last Witch Hunter) and Jeremy Lott (Lore), after a heated bidding war between Sony, Paramount and Working Title Films. That project will set up a Marvel-style shared universe, with the intention to launch a franchise with several different movies focusing on each of Robin Hood's band of merry men.
Robin Hood: Origins may possibly get picked up by Sony, to "mesh it with its other project," but nothing is set in stone at this time. Regardless, whichever of these projects moves forward first, it will be the first movie to explore this beloved outlaw archer since 2010's Robin Hood, starring Russell Crowe.